app.js

var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var fs = require('fs');
var bodyParser = require('body-parser');
var session = require('express-session')

var indexRouter = require('./routes/index');
var adminRouter = require('./routes/admin');
var loginRouter = require('./routes/login');

var accessLogStream = fs.createWriteStream(path.join(__dirname, './log/access.log'), {
  flags: 'a'
})
var app = express();

app.use(session({
  secret: 'secret', // 对session id 相关的cookie 进行签名
  resave: true,
  saveUninitialized: false, // 是否保存未初始化的会话
  cookie: {
    maxAge: 1000 * 60 * 30, // 设置 session 的有效时间，单位毫秒
  },
}))
app.use(bodyParser.json({
  limit: '50mb'
}));
app.use(bodyParser.urlencoded({
  limit: '50mb',
  extended: true
}));
// 全局连接数据库
require('./db/connect')

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('combined', {
  stream: accessLogStream
}));
// app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({
  extended: false
}));
app.use(cookieParser());
app.use('/', express.static(path.join(__dirname, 'public')));
app.use('/assets', express.static(path.join(__dirname, 'pages/assets')));

app.use('/', indexRouter);
app.use('/admin', adminRouter);
app.use('/login', loginRouter);

// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});


// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;